The Brazilian energy matrix is composed of a diverse set of energy generation systems, such as hydroelectric, thermal, solar, wind and other, which aims to meet the demand of our country. A large part of the energy production in Brazil comes from renewable sources, our country is the one that has the greatest capacity to produce energy through the wind when compared to the countries of Latin America. However, as with all power generation technology, the deployment and operation of wind systems has unfavorable environmental impacts, such as: electromagnetic interference, noise, visual impact, wildlife damage. Some of these impacts can be minimized or even eliminated through proper planning and technological innovations. The aim of this work is to gather theoretical foundations on wind energy, its effects on the environment caused by the implantation and operation of these systems.
The evolution of computational techniques observed in the field of Virtual Reality enabled new ways of discussing and using information technologies in educational contexts. Given this scenario, it has emerged the need to verify the efficiency of virtual training techniques as well as to establish methodologies to evaluate the skills acquisition. This paper aims to analyze the contribution of statistical method for an evaluation methodology of the Sensory-Motor Skills acquisition in Three-dimensional Interactive Virtual Environments. To achieve these purposes, an experiment was conducted and an application was built based on an assessment conceptual model to verify the contribution of a statistic approach for the evaluation of virtual tasks. The results show that it is possible to evaluate virtual tasks discriminating a skilled and unskilled run profile, and at the same time, to compare the correctness degree and the accuracy of techniques used to classify tasks to a greater or lesser degree of skill.
The present article was elaborated through bibliographical research done in books, websites and scientific articles. The objective was to present the importance of the management tool as a facilitator of the preventive maintenance plan in a manufacturing environment. Management tools such as Lean Manufacturing, Gantt Chart and Maintenance Performance Indicators were analyzed, which contributed to the implementation of the preventive plan. The tools studied in this work, aid in planning and integrated reliability within the plant, and enables a preventive maintenance intervention in the production processes, contributing with on-time delivery of products with good quality and production volume, availability of machines and cost minimization.
In order to reduce wear and costs with replacement parts of the mold, analyzes were carried out in the casting process of the wheel, and through the Quality Tools it was observed that the feed channel (pouring cup) of the mold was more frequent than other parts. To assess the cause of wear, the Cause and Effect (4m's) diagram was used and it was found that steel in which the mold was manufactured did not have sufficient properties to withstand the temperature that aluminum was deposited in the mold, causing thermal cracking and premature wear of the part (pouring cup), needing to be manufactured with more resistant material that is the cast iron, raising its performance. With the implementation of the project, several positive results were obtained: 88% decrease in the annual cost of spare parts; reduction of 90% waste of raw material; decrease in waste generation and a 500% increase in leak-cup resistance.
With the increase of the fleet of heavy vehicles and the knowledge that tires are one of the components that suffer most from natural wear, inherent to the use of the work routine, the maintenance or replacement of parts and components of the region allocated to the tyre occurs with Often and requires great physical effort. This article focuses on demonstrating the application of the mechanical design of a device that assists in the removal of the wheels of vehicles in this category, as well as to present the equation of the various efforts to which they are submitted, Using specific software such as AutoCAD, Inventor HSM and others. The project elaborated through these projection software in 3D, facilitates the construction and discrimination of the material necessary for the elaboration of the prototype, grounded in the calculations of determination of the static force and application of the safety coefficient, determination of reactions in the support, moment and maximum cutting forces, determination of yield strength in the tube, bearing type determination by the applied effort.
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